nomadseason

September Weather in Sumbul, Indonesia

Last updated: August 23, 2025

In Sumbul, Indonesia, the average temperature in September is a comfortable 20°C (68°F), with a minimum of 15°C (58°F) and a maximum reaching 27°C (81°F). However, prepare for some wet days, as precipitation totals around 256 mm (10.1 in) over approximately 25 days. The air can feel quite humid, with an average humidity level of 89%.

September Temperature in Sumbul

In September in Sumbul, the average temperature is 20°C (68°F). Maximum temperatures can reach 27°C (81°F), while the minimum can drop as low as 15°C (58°F). This pleasant climate makes it an ideal destination for outdoor activities and exploration.

September Weather in Sumbul: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sumbul, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumbul, September typically has an average temperature of 20°C (68°F), with highs reaching up to 27°C (81°F) and lows dropping to around 15°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec686969697069686868686868
Data source: Temperature data for Sumbul generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sumbul

In Sumbul in September, the precipitation amount is 256 mm (10.1 in) over the course of 25 days.

September Precipitation Trends in Sumbul

The chart displays monthly precipitation patterns in Sumbul, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Sumbul, September typically receives around 256 mm (10.1 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec199155212238243149166199256266416311
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Sumbul

In Sumbul in September, humidity is 89%. With an average temperature of 20°C (68°F), this humidity feels like walking through a warm, damp blanket that clings to your skin, making each step feel heavier and the air thick with moisture, which can be quite uncomfortable for traveling.

September Average Humidity in Sumbul

This chart illustrates the average monthly humidity levels in Sumbul, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Sumbul is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%74%74%77%83%85%84%87%89%89%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sumbul

In Sumbul in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Sumbul.

Maximum UV Index Levels in Sumbul for September

The chart shows the monthly maximum UV Index (UVI) for Sumbul in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Sumbul typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151617161613131515151413
Data source: Sumbul September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Sumbul Compares to Other Months

Weather in Sumbul varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sumbul, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sumbul, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)199 mm (7.8 inches)83%extreme
February Weather20°C (69°F)155 mm (6.1 inches)74%extreme
March Weather21°C (69°F)212 mm (8.3 inches)74%extreme
April Weather21°C (69°F)238 mm (9.4 inches)77%extreme
May Weather21°C (70°F)243 mm (9.6 inches)82%extreme
June Weather21°C (69°F)149 mm (5.9 inches)85%extreme
July Weather20°C (69°F)166 mm (6.5 inches)84%extreme
August Weather20°C (68°F)199 mm (7.8 inches)87%extreme
September Weather20°C (68°F)256 mm (10.1 inches)89%extreme
October Weather20°C (68°F)266 mm (10.5 inches)89%extreme
November Weather20°C (68°F)416 mm (16.4 inches)88%extreme
December Weather20°C (68°F)311 mm (12.2 inches)88%extreme

Compare Sumbul's Climate with Cities Worldwide